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An object of 4cm height is …

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An object of 4cm height is placed at a distance of 15cm in front of a convex mirror having radius of 10cm. Find the image distance.

Posted by Karthikeyan Sureshbabu 8 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Shweta Gulati 8 years, 11 months ago

Height of object , h₁= +4 cm

Object distance, u= -15cm

Radius of curvature = 10cm

So, focal length = 2 x 10= +20cm (Convex mirror)

Image distance, v can be calculated using mirror formula

1/v + 1/u = 1/f

1/v= 1/20 - 1/(-15)

1/v= 7/60

v= 60/7 = 8.57 cm

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